【单选题】In the first sentence, the word'laymen'means_____.
A.
people who stand aside
B.
people who are not trained as biologists
C.
people who are biologists
D.
people who love animals
【多选题】PLC选型时,CPU的性能指标是可编程控制器各项性能指标中最重要的,CPU主要的性能指标有()。
【简答题】A.People who are hurt in accidents. B.People whose faces were burned. C.People who suffer from cancer. D.People who want to be more beautiful.
【简答题】A.The people who had no hobbies in their own culture. B.The people who were not active and successful in their own culture. C.The people who had high position in their own culture. D.The people who ne...
【简答题】学校拟开发一套实验上机安排系统,可以帮助教师的安排上机。系统的主要功能有以下几个方面:教师可提交课程实验项目,安排实验机房,查询实验安排结果,打印实验安排报表等。学生可查询实验项目,查询课程实验安排等。管理员可管理教师、学生、课程等基本信息,同时还能管理新闻公告、查询实验安排等。所有用户均有修改密码,查看新闻公告等功能。要求: (1)分析从教师提交实验项目,到形成实验安排报表的数据流图。(注:安排...